I can't believe that anyone would pay that much for a Saleen except for the S7. You have a Mustang body with some bolt-ons. I guarantee you that for under $50,000, you can build a Mustang into a car that will compete with any Saleen out there.
Pictured below is one of (2) two '95 S351 Saleens. This car sold for $65,000.00 new. My friend sold the car in '99 for $32,000.00, with less than 5000 miles on it. My Cobra sold new in '95 for $24,000.00 and still has a book value of $17,000.00 for stock condition.
I just can't see spending that kind of money on a car that is sitll a basic Mustang.